Brush



Aug. 27, 1929. J. F. MURPHY BRUSH Filed Sept. V24, 1926 Patented Aug.27, 1929.

UNITED STATES JAMES F. MURPHY, or DANBURY, CONNECTICUT.

BRUSH.

Application filed September 24, 1926. Serial No. 137,401.

This invention relates to brushes, especially to rotary brushes, andmore particularly to a brush for raising the nap on velour hats. It hasfor an object to provide a brush construction in which the backingcarrying the bristles isniore securely and uniformly attached to thebody or support.

It is also an object of the invention to provide a construction in whichthe bristles may be quickly and easily renewed.

IVith the foregoing and other objects in view, I have devised the.construction illustrated in the accompanying drawings forming a. part ofthis specification. In this drawing, a,

Fig. 1 is a vertical section through the brush.

Fig. 2 is aside elevation thereof with a portion of a plate broken awayto more clearly show the construction, and

Fig. 3 is a partial section of the brush showing a body member ofdifferent material.

The brush shown comprises a block or body member 5 of any suitablematerial, such as wood or rubber as shown at 5, Fig. 8, mounted on ashaft 6 and this block is'circular and preferably cylindrical. About theperiphery of this body or block is placed a leather or other suitableflexible support 7 carrying the bristles 8. In this particular brushillustrated the flexible strip 7 is leather and carries the wirebristles 8, and for brushing or jacking hats to raise the nap for avelour finish these wire bristles are preferably bent intermediate theirlengths in the direction of rotation, as indicated at 9, in Fig. 2.

The flexible strip 7 is wrapped about the periphery of the body with thebristles extending radially outward, and this strip has on its oppositeedges extensions or flange portions 10 which may be folded over theedges of the block against the opposite sides thereof. In assembling,these flanges or extensions are tacked to the sides of the block at oneend, as shown at 11, and then the strip is tightly drawn about theperiphery of the block and tacked at suitable distances, as shown at 12.In order, however, that this should be secured entirely by tacks itwould be necessary to put alarge number of tacks about the periphery ofthe body, and even then the strip would not be secured between adjacenttacks and would have a tendency to loosen and rise from the surface ofthe block in operation. Furthermore, the use of a large number of tacksrequires a great deal of time in applying the strip to the block, or inremoving an old strip and applying a new one in renewing the bristlesafter they become worn.

I overcome these objections by providing clampmg plates 13 on theopposite sides of the block. These plates may be substantially flat orshaped as shown on the drawing, but they are constructed and arranged tobe clamped against the side extensions 10 of the fibre backing or stripwhich carries the bristles, and they should preferably engage theseextensions throughout the periphery of the block. These plates arefirmly clamped against the extensions on the opposite sides of the blockto firmly clamp these extensions agalnst the block, and it will beapparentthat as they engage and clamp these extensions throughout theirentire peripheries all portions of the strip are firmly and uniformlysecured to the block, and therefore, there is no portion which isunsecured or can work loose and rise from the surface of the blockin'operation. Furthermore, in attaching the backing strip carrying thebristles it is necessary to use only a sufficient number of tacks toapply the strip in proper position and hold it until the plates areclamped in position. The plates may be clamped against the oppositesides of the block by bolts passing through the plates and block, or bymeans of clamping nuts 14: threaded on the shaft 6. It will, of course,be understood that this shaft is adapted to be mounted in suitablebearings and connected to any suitable drive for rotating the brush. Itwill be equally apparent that with the use of these clamping plates theoperation of renewing the bristles is greatly simplified and may beperformed in much less time, as the operation of loosening the clampingplates, removing the small number of tacks and then applying the newbacking strip with a new set of bristles is a very simple one.Furthermore, it will also be apparent that if tacks alone are reliedupon the large number of tacks used will soon so tear the surface of theblock after a few renewals of the bristles as to render the blockuseless.

For certain work I prefer to make this block or body 5 of rubber as itis adapted to yield to a certain extent and immediately resume itsoriginal shape. This can be used where a rigid backing would cause tooheavy and unyielding pressure of the bristles against the surface of thehat and might tear or otherwise injure it.

Having thus set forth the nature of my invention, What I claim is:

1. A brush comprising a circular body member, a flexible supportingstrip carrying bristles extending about the periphery of the body memberand having flanges free of bristles extending onto the sides of saidmember, a pair of clamping plates one on each side of the body member,and means for clamping the plates to the body to clamp the said flangesthereto and secure the strip to the body.

2. A brush comprising a circular body member, a flexible supportingstrip carrying bristles extending about the periphery of the body memberand having side portions free of bristles passing over the edges of thebody onto the side surfaces thereof, a clamping plate on each side ofthe body having a peripheral, raised, substantially flat surface formingan annular clamping surface arranged to engage said side portions of thestrip throughout substantially the entire periphery of the body, andmeans for clamping the plates against said side portions to clamp thestrip to the body.

3. A brush comprising a circular body member of material sufficientlysoft to permit tacks to be driven into it, aflexible fibre stripcarrying bristles covering the curved surface of said body and havingextensions at the side edges thereof free from bristles folded over -theedges of the body onto the opposite sides thereof, tacks driven throughsaid extensions into the body member, a clamping plate on each side ofsaid body and arranged to engage said extensions throughoutsubstantially their entire periphcry, and means for clamping said platesagainst said extensions to clamp said strip to the body. I

l. A brush comprising a circular body I member of yieldable resilientmaterial as rubber, a flexible strip carrying bristles extending aboutthe curved surface of said member, said strip carrying bristles andhaving extensions free from bristles at its opposite side edges foldedover the opposite side edges of the block against the opposite sideWalls thereof, clamping plates for engaging those extensions throughoutsubstantially their entire lengths, and means for clamping the platesagainst said extensions to clamp the strip to the body member.

In testimony whereof I aflix my signature.

JAMES F. MURPHY.

